Interactive setup may cause bugs when used with pipe in scripts

[Prnyself]

#!/bin/bash

set -e
set -o pipefail

unset LANGUAGE
unset LANG
unset LC_ALL

qsctl --debug --config=/root/.qingstor/config.yaml cat qs://snapshot/by/ss-bytvqkwx.img.lz4 > /tmp/1

When config file not existed, Interactive setup will run and it may cause error because of some characters e.g. \n, \r

[Prnyself]

close by #292